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Chalcedony
Chalcedony

Scheelite
Scheelite



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Chalcedony
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Scheelite

Chalcedony and Scheelite Optical Properties

Optical Properties

Luster

Vitreous
Vitreous, Adamantine

Pleochroism

-
Definite dichoric in yellow (yellow to orange-brown)

Dispersion

0.010.04
0.005 1
👆🏻

Transparency

Translucent, Translucent to opaque
Translucent, Transparent

Refractive Index

1.530-1.5431.918-1.936
1 3.25
👆🏻

Optic Character

-
-

Crystal System

Trigonal
tetragonal

Birefringence

0.003-0.0090.016
0 0.296
👆🏻

Clarity

Translucent
Translucent

Chalcedony and Scheelite Optic Character

Chalcedony and Scheelite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Chalcedony and Scheelite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Chalcedony and Scheelite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Chalcedony and Scheelite Transparency

Similar to their colors, Chalcedony and Scheelite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Chalcedony is Translucent and Translucent to opaque while Chalcedony is Translucent and Translucent to opaque in appearance.